Chon 

 car 



CHONDROGENESIS 



Chondrogenesis {kon-dro-jen' -es-is) [^owipof , cartilage; 



- c, formation]. The formation of cartilage. 

 Chondrogenetic ykon-dro-jen-et' -ik) [;rov<ipoc, cartilage; 

 rmationj. Forming cartilage ; relating to 

 chondrogenesis. 

 Chondrogenous (kon-drof -en-us) [xovSpoc , cartilage ; 

 - tc , production]. Of the nature of chondrogen ; 

 producing cartilage. 

 Chondroglucose (kon-dro-glu' -kos) [^vJpoc, cartilage; 

 sweet]. One of the glucoses. See Carbohy- 

 ■ate and Glucose. 



ndrography {kon-drog* '-ra-fe) rj^owipoc, cartilage ; 

 to write]. An anatomic description of the 

 rtilr. 

 Chondroid (kon'-droid) [xovdpoc, cartilage; eldoc, 



'orm]. Resembling cartilage. 

 Chondroiogy (kon-drol'-o-je) [xovdpoc, cartilage ; ?jbyoc , 



science] . The science of cartilages. 

 Chondroma {kondro' -mah) fjtowfpoc, cartilage ; oua, 

 tumor]. A cartilaginous tumor. See Enchondroma. 



I Chondromalacia (kon-dro-mal-a' -se-ah) \_x6v6por, car- 

 tilage; ua/xuua, softening]. Softening of a cartilage. 

 C. auris. Same as Harmatoma auris. 

 Chondromalacosis {kon-dro-mal-ak-o* 'sis). See Chon- 

 dromalacia. 

 Chondromatous (kon-drom' '-at-us) fj^oi'dpoc, cartilage; 

 bjia, a tumor]. Relating to or of the nature of cartilage. 

 Chondro-myxoma (kon-dro-miks-o f -mah) \_x6v5poc, car- 

 tilage ; f>Ea, mucus; oua, a tumor: //., Chondro- 

 tomata\ A chondroma with myxomatous ele- 

 ments. 

 Chondrosarcoma [kon-dro-sar-kcr' -mah) [^ovtfpof, car- 

 tilage ; capucjua, sarcoma: //., Chondrosarcomatd\. 

 A cartilaginous and sarcomatous tumor. 

 Chondrosarcomatous (kon-dro-sar-kom> '-at-us) [x° v ~ 

 Spoc, cartilage ; aapmjua, sarcoma] . Relating to chon- 

 drosarcoma. 

 Chondrosis {kon-dro* '-sis) [^ovJ/sof, cartilage]. For- 

 mation of cartilage. 

 Chondrosteous {kon-dros' -te-us) \jpv6poc, cartilage; 

 btrriov, bone]. In biology, having a cartilaginous 



Chondrotome {kon f -dro-tbm) \jeov6poc, cartilage ^ to/wc, 

 cutting]. An instrument for cutting cartilage. 



Chondrotomy (kon-drot' -o-me) [^ovJpo^, c~;:ilage; 



to cut]. The dissection or surgical division 



of a cartilage, or the anatomic analysis of a cartilage. 



Chondrus (kon r -drus) [x^vdpor, a grain ; cartilage]. 

 I. Irish Moss. The substance of the algae C. crispus 

 and Gigartina mamillosa. These yield, on boiling with 

 water, a soluble colloid consisting mainly of mucilage. 

 This is demulcent and somewhat nutrient, and is 

 sometimes used in making blanc mange. Dose indefi- 

 nite. Unof. See Carragheen. 2. A cartilage ; the 

 ensiform cartilage. 



Chopart's Amputation. See Operations, Table of. C. 

 Operations. See Operations, Table of. 



Chopping (cho/Z-ing). See Percussion. 



Chorda ( tor* -dah)[L., a. cord: pl.,Chordce\ A cord, ten- 

 don, or filament of nerve. C. caudalis, the urochord. 

 C. dorsalis. See Notochord. C. spinalis, the 

 spinal cord. C. tendineae, the tendinous strings 

 connecting the columns cornea of the heart with the 

 auriculo-ventricular valves. C. tympani, a filament 

 of the Vidian nerve that enters the tympanum. C. 

 umbilicalis, the umbilical cord. C. vertebralis, the 

 notochord ; the spinal cord. C. vocalis, one of the 

 vocal bands or thyro-arytenoid ligaments. 



Chordal {hot^-dal) [chorda, a cord]. Relating to a 



^ chorda, especially to the notochord. 



Chordapsus {kor-dap f -sus) [^b/xfr/, an intestine ; a-Trreiv, 

 to tie up]. Synonym of Acute Intestinal Catarrh. 



293 CHOREIC 



Chordee {kor-de*) [x°P^'lt a cord]. A symptom of 

 gonorrhea consisting of painful erection and down- 

 ward curvature of the penis. 



Chorditis (kor-di' '-tis) \_X°P&'h a cord ; irtc, inflamma- 

 tion]. Inflammation of the vocal bands. C. tuber- 

 osa, a localized thickening on the vocal bands, 

 often bilateral, and situated at the junction of the 

 posterior two-thirds with the anterior third. 



Chordotonal (kor-do-to r -nal) \_xopf>r t , chord ; t6voc, 

 tone]. In biology, applied to sense-organs or 

 parts of arthropods that are responsive to sound- 

 vibrations. 



Chorea (ho-re / -ah) [x°P e,a > dancing]. St. Vitus's 

 dance. A functional nervous disorder, usually occur- 

 ring in youth, characterized by spasmodic and con- 

 vulsive contraction and non-rhythmic action of the 

 muscles of the extremities, face, etc. The action of 

 the heart is irregular, and in a large number of cases 

 a systolic murmur is present. Rheumatism is a fre- 

 quent complication. Chorea may be caused by a 

 number of conditions, among which are fright and 

 reflex irritations, but it is essentially a disease of the 

 later period of childhood, and affects girls about three 

 times as frequently as boys. Occasionally it is seen 

 in the adult, and may become a serious complication 

 of pregnancy, resulting in the death of both fetus 

 and mother, ^"hen it occurs late in life it generally 

 resists treatment. C, Automatic, an affection in 

 which paroxysms of apparently purposive actions 

 occur independently of the will, as the result of an 

 impulse that arises spontaneously or that occurs in 

 response to a stimulus received from without. C, 

 Buttonmaker's, a form of chorea in girls employed 

 in button-mills, the result of application at their trade. 

 The fingers move involuntarily when not at w T ork, 

 following the same motions as when guiding the 

 procession of buttons. It is due to an erethism of 

 the centers in the brain for the hands and fingers. 

 C, Chronic. See C, Huntington' s. C, Electric. 

 See DubinV s Disease. C, Epidemic, dancing mania. 

 See Choromania. C. festinans. See Paralysis agi- 

 tans. C. germanorum, a term for the major form of 

 chorea. C. -habit. See Spasm. C, Hereditary. 

 See C. , Huntington s. C, Hysterical. See C. , A/aj'or. 

 C, Huntington's, an affection frequently hereditary, 

 of adnlt or middle life, characterized by irregular 

 movements, disturbance of speech, and gradual de- 

 mentia. It was first desciil>ed by Huntington, a 

 physician of Long Island, U. S. C. insaniens, 

 maniacal chorea ; a grave form of chorea usually seen 

 in adult women, and associated with maniacal symp- 

 toms. This may develop from the ordinary form, and 

 usually ends fatally. It may develop during preg- 

 nancy. C, Maniacal. See C. insaniens. C, Major, 

 the hysterical chorea of the French, in which there 

 are regular oscillatory movements of the parts. C. , 

 Mimetic, that which is caused by imitation. C, 

 Minor, simple chorea. C. oscillatoria is marked by 

 more or less regular oscillations of the head, trunk, or 

 limbs. C, Post-hemiplegic. See Athetosis. C, 

 Post-paralytic, a form of involuntary movement seen 

 in patients after an attack of hemiplegia. C, Rhyth- 

 mic. See C. , Major. C, Rotatory, a hysterical form 

 associated with rhythmic movements of the body 

 or head. C, School-made, chorea resulting from 

 overstimulation of children at school by parents and 

 teachers. C. scriptorum. See Cramp, Writers'. 

 C, Senile. See Paralysis agitans. C. spastica. 

 See Paraplegia, Infantile Spasmodic. C, Syden- 

 ham's, ordinary chorea. 



Choreic (ko-re'-ik) [x°P E ' a -> dancing]. Relating to, of 

 the nature of, or affected with, chorea. 



